Chilling device



Dec. 21, 1937. Q WALTER 2,102,866

CHILLING DEVICE Filed Aug. 15, 1935 3 Shets-Sheet 1 Charles I Walter 'INVENTOR Ziggy? sgww ATTORNEY C. T. WALTER CHILLING DEVICE Dec. 21, 1937.

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\N w a b w M Q N wm 3 mm M Q MN m INVENTOR %w% wlrwfss- J MCKQMM ATTORNEY Dec. 21, 1937. c, WALTER I 2,102,866

CHILLING DEVICE Filed Aug. 15, 1955 I5 Sheets-Sheet 5 Charles I M dZze/z" INVENTQR w/ /vEas- BY -(.414M

ATI'ORNEY' Patented Dec. 2i, 1937 UNITED STATES PATENT OFFICE CHILLING DEVICE Application August 15, 1935, Serial No. 36,415

16 Claims.

This invention relates to a chilling device.

One of the objects of this invention is to provide a simple, practical and comparatively inexpensive chilling device of strong durable construction, designed for chilling fluid products, such as hot soap and the like, to a stiff pasty mass.

Another object of this invention is to provide an internal chilling device having means near the place of discharge for separating the solidifled portion of the chilled product from the unsolidified portion, permitting only the solidified portion to pass from the chilling chamber.

Another object of this invention is to provide means in an internal chilling device for removing the solidified portion of the product from the surface of the chilling means, thereby maintaining maximum eiiiciency of the refrigerating surface.

Another object of this invention is to provide means in an internal chilling device for positively directing the inflowing liquid over a rotatable chilling element in the direction of rotation thereof.

Another object of this invention is to provide a devicein which hot fluid which is congealable by temperature reduction, upon being passed between a fixed casing and a rotatable chilling element in heat exchange relationship therewith, will be chilled to a stiff pasty mass, a solidified portion of which will be separated therefrom, removed from contact with the surface of the chilling element and discharged from the machine.

Other objects of the invention will be apparent from the description and claims which follow.

For a full understanding of the several aspects of this invention, reference may be had to the drawings in which similar reference characters in the several figures indicate similar elements.

Figure 1 is a side elevation illustrating a preferred embodiment of the present invention.

Figure 2 is a plan view of the device shown in Figure 1.

Figure 3 is an enlarged vertical sectional view of the device shown in Figure 1, the motor and framework being omitted.

Figure 4 is a vertical sectional view taken on line 4-4 of Figure 3.

Figure 5 is an end elevation taken on line 55 of Figure 3.

In the accompanying drawings in which is illustrated one embodiment of the invention, I designates an outer cylindrical shell provided with inlet and outlet pipes 2 and 3, respectively.

Shell I is mounted upon standards or uprights 4 secured to suitable framework 5 by bolts 6. Heads 1 and 8 are secured at the ends of shell I by annular series of bolts 9 and I studded in the ends of shell I. Heads 9 and I8 areaprovided with central hub extensions I and I2 having exteriorly threaded ends I3 and I4, respectively.

Shell I and heads 1 and 8 form a casing for rotary cooling drum I arranged therein. Rotary cooling drum I5 is concentric with shell I and spaced therefrom a suflicient distance to provide space I6 for passage of the product between pipe 2 and outlet pipe 3.

Drum I5 terminates slightly short of heads I and 8 to prevent frictional engagement thereagainst as it is rotated therebetween. Drum I5 is supported by tubular shafts I1 and I8 rotatably mounted in heads 1 and 8, Gland couplings l9 and 20 are secured on threaded portions I3 and I4 about shafts I1 and I8 to prevent leakage of product from the chilling chamber.

Shafts I1 and I8 are provided with reduced portions 2| and 22 to provide shoulders 23 and 24. The reduced portions 2| and 22 are journaled within bearings 25 and 26 of the antifriction type, the bearings and 26 being ar- 2 ranged to abut shoulders 23 and 24 to prevent thrust movementof drum I5 between headsl and 6.

Anti-friction bearings 25 and 26 are secured tobrackets 21 and 28 extending from heads "I and 8, respectively. Brackets 21 and 28 are supported against bending by a number of webs as 29 and 30 extending from the outer ends of brackets 21 and 28 to heads I and 8.

Rotary cooling drum I5 consists of a hollow cylinder forming an interior refrigerant chamber 3|. The hollow portions of tube I1 and I8 communicate with chamber 3|, providing a passage for continuous circulation of a cooling medium through chamber 3|.

Stationary inlet and outlet pipes 32 and 33 extend within annular recesses 34 and 35 at the outer ends of tubular shafts I! and I8 and serve to carry the cooling'medium to and from shafts l1 and I8. Gland couplings 36 and 31 are secured to shafts l1 and I8 about inlet and outlet pipes 32 and 33 to prevent leakage of the cooling medium between the inlet and outlet pipes and their respective shafts.

Drum I5 is rotated in a clockwise direction by sprocket 38 secured to shaft I1. Sprocket 38 is driven by motor 39 through chain 40 and sprocket 58. Motor 39 may be affixed to framework 5 by suitable bolts 5|.

As shown in Figure 4, scraping element 4I, consisting of an elongated bar, extends the full inner length of shell I and is secured by bolts 42 to the inner face of shell I in the space between inlet and outlet pipes 2 and 3. Scraping element 4I is provided with a square edge 43 adjacent inlet pipe 2 and a beveled edge 44 adjacent outlet pipe 3, the squared edge facing in the direction of rotation of drum I5 and the beveled edge counter thereto. Lower face 45 of scraping element H is fitted closely to drum I5 but without frictional engagement therewith.

If desired, scraper blade 4| may be spring loaded to insure close contactwith the surface of the drum I5. I prefer, however, to employ a scraper blade rigidly amxed to the outer shell, the edge 44 of the scraper blade being placed in very close proximity to the rotating cylinder. This construction gives positive scraping.

However, this condition presupposes very good machine work in which the rotor is a perfectly circular cylinder, truly concentric with the supporting elements which rest in the bearings, and requires a rigid construction with bearings which will maintain accuracy over a long period of time. I have found that anti-friction bearings are best suited for this purpose.

- rotor but is mounted extremely close to it gives very satisfactory results in practice and brings about a minimum amount of wear-and stress on the machine. The scraper blade when rigidly mounted is subjected only to the wearof the product and not to frictional wear against the surface of the rotor nor is it forced outwardly by very stiff product on the surface of the rotor.

As fluid enters the chilling device through inlet pipe 2, squared edge 43 of scraping element 4I positively directs the fluid in the direction of rotation of drum I 5. The chilled product adhering to the surface of drum I5 is removed by beveled edge 44 of scraping element 4| and'directed through outlet pipe 3.

Gate member 46 consisting of an elongated bar extends the full inner length of shell I and is secured to the inner face thereof by bolts 41. Face 48 of gate 46 is spaced from drum I5 and serves to separate a solidified portion of the chilled product from the mass as the .drum is rotated thereunder. Gate 46 is positioned in-relation to the rotation of drum I5 such that the product will be separated prior to engagement with scraper 4 I.

The solidified portion passing beneath gate 46 is engaged by scraping element II and removed thereby.

A liquid congealable by chilling is introduced under pressure to the chilling device through inlet pipe 2. The fluid upon entering space I6 flows in the direction of rotation of drum I5 by reason of the barrier formed by edge 43 of scraping element 4I. The chilling medium circulating through drum I5 causes a portion of the fluid to solidify and adhere to the surface of the drum. Rotating drum I5 carries the solidified portion of the product beneath gate 46 to scraping element H, by which it is removed and directed through outlet pipe 3.

I have found in chilling soap that by rotating drum I5 from ten to thirty R. P. M., a portion of the heated soap will become solidified, it being apparent, of course, that the slower drum I5 is rotated, the longer the fluid will be subjected to the chilling surface and consequently the more firmly chilled it will be at thepoint of extrusion. If desired, extrusion nozzles may be secured to threaded end 49 of outlet pipe 3 through which the solidified product may be forced and formed into any desired shape. It has been found, however, -that heated soap should be introduced through inlet pipe 2 at a pressure ranging from 500 to 3000 pounds per square inch depending upon the nature of the soap and the hydraulic system following the chilling device in order to satisfactorily utilize forming nozzles on outlet pipe 3. I I

In actual practice in the treatment of soap I have found that satisfactory results are secured with chilling drum I5 spaced substantially onehalf inch from shell I and the face 48 of gate 46 spaced approximately one-sixteenth inch from drum I5.

This invention, while herein described as-a device for chilling soap in fluid form, is also adapted for chilling other fluids such as shortenings, margarines, ice cream and other congealable fluids.

I claim:

1. A chilling device of the class described including a cylindrical shell, inlet and outlet means in said shell for the introduction and removal of a fluid product to be chilled therein and a rotatable drum arranged in spaced relation within said shell, said drum being provided with inlet and outlet'm'eans for the passage of a chilling medium therethrough, and a scraping element rigidly mounted in fixed spaced relationship to the sur-- face of the drum for removing solidified product from the surface of the drum and directing the same through the outletin the shell, said scraping element providing a surface relative to the shell inlet for directing fluid as introduced into the shell in the direction of rotation of the drum.

2. A chilling device of the class described includinga cylindrical shell, inlet and outlet means in said shell for the introduction and removal of a fluid product to be chilled therein and a rotatable drum arranged in spaced relation within said shell, said drum being provided with inlet and outlet means for the passage of a chilling medium therethrough, and a gate member located on the inner face of said shell and spaced from said drum to separate a solidified portion of the chilled product from the mass.

3. A chilling device of the'class described including a cylindrical shell, inlet and outlet means in said shell for-the introduction and removal of i a fluid product to be chilled therein and a rotatable drum arranged in spaced relation within said shell, said drum being provided with inlet and outlet means for the passage of a chilling medium therethrough, a gate member located on the inner face of said shell and spaced from said drum to separate a solidified portion of the chilled product from the mass and a scraping element located between said shell and said drum to remove the solidified portion from the surface of the drum .medium therethrough, and a gate member spaced tending the inner length of said shell and secured to the inner face thereof, said gate member constituting means for separating a solidified portion of the chilled product from the mass.

5. A chilling device of the class described including a cylindrical shell, inlet and outlet means in said shell for the introduction and removal of .a fluid product to be chilled therein and a rotatable drum arranged within said shell and spaced therefrom, said drum being. provided with inlet and outlet means for the passage of a chilling me dium therethrough, and a scraping element located between the shell and the drum, said scraping element consisting of an elongated bar extending the length of the shell and secured to the inner face thereof having a beveled edge extending counter to the direction of rotationpf the drum, said scraping element constituting means for removing solidified product from the surface of the drum and directing the same through the outlet provided therefor.

6. A chilling device of the class described including a cylindrical shell, inlet and outlet means in said shell for the introduction and removal of a fluid product to be chilled therein and a rotatable drumearranged within said shell and spaced therefrom, said drum being provided with inlet and outlet means for the passage of a chilling medium therethrough, and a scraping element lo-- cated between the shell and the drum, said scraping element consisting of an elongated bar extending the length of the shell and secured to the inner face thereof having a squared edge facing in the direction of rotation of the drum and a beveled edge facing in the direction counter to the direction of rotation of the drum, said squared edge constituting means for directing flui d introduced through the fluid inlet in the direction of rotation of the drum and said beveled edge constituting means for removing solidified product from the surface of the drum and directing the same through the outlet provided therefor.

'7.\ A chilling device of the class described having a casing comprising a cylindrical outer shell provided with inlet and-outlet means for the introduction and removal of a fluid product and fixed heads'at the ends of said shell, a cylindrical drum mounted upon tubular shafts arranged to rotate within said casing in spaced relation with said shell, inlet and outlet means communicating with said tubular shafts for passing a chilling medium through said drum and a gate member secured to the inner face of said shell and spaced from said drum to separate a solidified portion of the chilled product from the mass.

8. A chilling device of the class described having a casing comprising a cylindrical outer shell provided with inlet and outlet means for the introduction and removal of a fluid product and fixed heads at the ends of said shell, a cylindrical drum mounted upon tubular shafts for passing a chilling medium through said drum and a scraping element rigidly secured in fixed spaced relationship to the surface of said drum for removing solidified product from the surface of said drum and directing the same through the outlet provided in said shell, said scraping element providing a surface relative to said shell inlet for directing fluid as introduced into the shell in the direction of rotation of said drum.

9. A chilling device of the class described having a casing comprising a cylindrical outer shell provided with inlet and outlet means for the introduction and removal of a fluid product and fixed heads atthe ends of said shell, 9. cylindrical drum mounted upon tubular shafts arranged to rotate within said casing in spaced relation with said shell, inlet and outlet means com- .municating with said tubular shafts for passing a chilling medium through said drum and a scrap= ing element located between said drum and said shell and secured to the inner face of said shell having a squared edge facing in the direction of rotation of said drum and a beveled edge facing in the direction counter to the-direction of rotation of said drum, said squared edge constituting means for directing fluid introduced through the fluid inlet in the direction of rotation of the drum and said beveled edge constituting means for removing solidified product from the drum and directing the solidified product through the outlet provided therefor.

10. In a chilling device of the class described having an outer shell provided with inlet and outlet means for the introduction and removal of a congealable material and a rotatable chilling drum therein, scraper means in fixed spaced relationshipto the surface of said drum, said scraper means providing a surface relative to said shell inlet for directing fluid as introduced into the shell in the direction of rotation of said drum, said drum being mounted in anti-friction bearings exteriorly of the shell.

11. In a chilling device having an outer shell, a chilling drum rotatably mounted within said shell, inlet means for the introduction of a congealable material into said shell under pressure, and means mounted relative to the inlet means for directing the incoming material in the direction of rotation of the drum, means mounted relative to said drum surface for separating the congealed material from the mass, said separatingv means being located sufiiciently apart from said inlet means to permit congelation of the congealable material adjacent the surface of the drum, and a scraper means mounted in fixed spaced relationship with said drum surface for removing the congealed material therefrom.

l2. Ina chilling device having a cylindrical shell provided with an inlet and outlet for the introduction and removal of a congealable compound introduced into said shell under pressure and a chilling rotor rotatably mounted within said shell, means mounted relative to said rotor surface for separating the congealed material from the mass and a scraper means mounted between said outlet and said inlet and adapted for removing the congealed material from the surface of said rotor and for directing the same through said outlet, said scraper means being rigidly mounted in fixed spaced relationship with said rotor surface.

13. In a chilling device having a cylindrical shell provided with an inlet and outlet for the introduction and removal of a congealable compound introduced into said shell under pressure and a chilling rotor rotatably mounted within said shell, means mounted relative to said rotor surface for separating the congealed material from the mass and a scraper means mounted between said outlet and said inlet and adapted for removing the congealed material from the surface of said rotor and for directing the same through said outlet, said scraper means being rigidly mounted in fixed spaced relationship with said rotor surface and providing a surface relative to said inlet for directing the material as introduced into the shell in the direction of rotation of said rotor.

14. In a chilling device having an outer shell provided with closely adjacent inlet and outlet means for the introduction -and removal of a congealable material and a rotatable chilling drum therein, scraper means in fixed spaced relationship to the surface of said drum, said scraper means being located between said inlet and outlet means and providing a surface relative to said inlet means for directing the congealable material as introduced into the shell in the direction of rotation of said drum.

15. In a chilling device having an outer shell, a rotatable chilling drum mounted therein, inlet and outlet means for the introduction and removal of a congealable material, and means mounted relative to the inlet means for directing the incoming material in the direction of rotation of the drum, a gate member in fixed spaced relationship to the drum to separate the conaioaeee for the introduction and removal of a congeal-i able material, and means mounted relative to the inlet means for directing the incoming material in the direction of rotation of the rotor, a gate member rigidly mounted within the shell in fixed spaced relationship to the rotor to separate the congealed material from the mass, said gate member being located in close proximity to the outlet means and sufficiently apart from the inlet means to permit congeiation of the congealable material adjacent the rotorsurface.

' CHARLES T. WALTER. 

